Only do ssh keys on master

Signed-off-by: Noah Knegt <git@noahknegt.com>

.drone.yml

@@ -21,13 +21,17 @@ steps:
       - echo "$SSH_KEY" > /root/.ssh/id_ed25519
       - chmod 600 /root/.ssh/id_ed25519
       - ssh-keyscan -p 4422 vps.noahknegt.com > /root/.ssh/known_hosts
-      - ssh -p 4422 noahk@vps.noahknegt.com "echo 'SSH connection established'"
     environment:
       SSH_KEY:
         from_secret: ssh_key
     volumes:
       - name: ssh_key
         path: /root/.ssh
+    when:
+      event:
+        - push
+      branch:
+        - master
 
   - name: ansible apply
     image: cytopia/ansible:latest-tools